From the 1 of 7 linked papers with an AI index.
7 papers
Finite-size effects and interaction-driven crossovers in quarter-filled attractive Hubbard model: Exact diagonalization, DMRG and machine-learning analysis
Md Fahad Equbal, M. A. H. Ahsan, Satoru Hayami
The paper studies the quarter‑filled attractive Hubbard model on finite cylindrical lattices using exact diagonalization, DMRG, and unsupervised machine‑learning methods to identif…
Probing imbalanced Weyl nodes in two-dimensional anisotropic Weyl semimetal via optical conductivity
Suheel Ahmad Malik, M. A. H. Ahshan, SK Firoz Islam
We present a theoretical investigation of the electronic band structure and optical properties of a two-dimensional anisotropic semimetal that is described by a tilted semi-Dirac t…
Emergence of correlation-driven altermagnetism in Hubbard model on geometrically frustrated lattice-clusters
Md Fahad Equbal, M. A. H. Ahsan
We investigate the emergence of correlation-driven altermagnetism in simple and extended Hubbard model on geometrically frustrated lattice-clusters using exact diagonalization. By…
Principal Component Analysis of Competing Correlations in Quarter-Filled Hubbard Models
Md Fahad Equbal, S R Hassan, M. A. H. Ahsan
We present an unsupervised learning analysis of correlation hierarchies in the quarter-filled simple and extended Hubbard models by applying principal component analysis (PCA) to e…
Spin-resolved Mott crossover and entanglement in the half-filled Hubbard model
Md Fahad Equbal, M. A. H. Ahsan
We investigate the interaction-driven reorganization of spin and charge correlations in finite Hubbard clusters using exact diagonalization. Focusing on half-filled and lightly dop…
Binding of holes and competing spin-charge order in simple and extended Hubbard model on cylindrical lattice: An exact diagonalization study
Md Fahad Equbal, M. A. H. Ahsan
We investigate the binding of holes and the emergence of competing spin-charge order in the simple and extended Hubbard model using exact diagonalization on the 3x4 cylindrical lat…